[[!comment format=mdwn username="joey" subject="""comment 1""" date="2015-04-02T01:14:06Z" content=""" I think I saw this once myself (have no servers older than jessie left now). I believe the problem can be worked around by running make clean in /usr/local/propellor on the server. I'm not clear yet on a good way for --spin to detect that propellor has failed due to this, rather than some other problem, and try a clean and rebuild. Hmm, xmonad should have a similar problem, since it builds a haskell program locally. I wonder how the debian package deals with it there. Note there's a libffi6, so this will presumably happen again.. """]]